help me solve installment size

israfil

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Joined
Aug 1, 2015
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Principal = $300,000
Interest= 13% pa compounding quarterly
20 quarterly installment (payment date 20 th of each month)
after paying 2 installment $ 20,633.665 interest rate changed to 12.75% pa with compounding quarterly (effective from 1st of July).

the problem is during the quarter first 10 days interest will be calculated @13% pa and rest of the quarter interest will be calculated @12.75% pa.

what should be the installment size for 3rd quarter and what should be the installment size for (4th - 20th) quarter? :)
 
Principal = $300,000
Interest= 13% pa compounding quarterly
20 quarterly installment (payment date 20 th of each month)
after paying 2 installment $ 20,633.665 interest rate changed to 12.75% pa with compounding quarterly (effective from 1st of July).

the problem is during the quarter first 10 days interest will be calculated @13% pa and rest of the quarter interest will be calculated @12.75% pa.

what should be the installment size for 3rd quarter and what should be the installment size for (4th - 20th) quarter? :)
What are your thoughts? What have you tried? How far have you gotten? Where are you stuck?

Please be complete. Thank you! ;)
 
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